- Range +/- 1670 Gs. Over (and below) this value the meter displays "OVER" text
- The polarity of the magnetic field is displayed as letter "N" or "S"
- 0.96" "OLED display (good visibility in dark rooms)
- Li-Po 320 mAh rechargeable battery - can be recharged with typical 5V phone power supply (with micro USB plug)
- auto power off - after 1 minute of not in use
- auto zero set at startup
- tactile push buttons: POWER, MODE, START/STOP
- 3 modes: CURRENT (the actual value of the magnetic field), AVERAGE (the average value of the magnetic field - can be stopped/restarted with START/STOP button) and PEAK (the maximum value - can be reset with the START/STOP button)
- 200 samples per second in all modes
- ABS enclosure (grey or black)
- graphical representation of the battery displayed on the screen
- when USB charger is connected, USB symbol displayed on the screen
- charging status LED
- low power consumption (10mA in active mode, 70uA in sleep mode)

Since the meter is never switched off (it only enters sleep mode) there is also a RESET button but I never had to use it.

- Range +/- 1670 Gs. Over (and below) this value the meter displays "OVER" text
- The polarity of the magnetic field is displayed as letter "N" or "S"
- 0.96" "OLED display (good visibility in dark rooms)
- Li-Po 320 mAh rechargeable battery - can be recharged with typical 5V phone power supply (with micro USB plug)
- auto power off - after 1 minute of not in use
- auto zero set at startup
- tactile push buttons: POWER, MODE, START/STOP
- 3 modes: CURRENT (the actual value of the magnetic field), AVERAGE (the average value of the magnetic field - can be stopped/restarted with START/STOP button) and PEAK (the maximum value - can be reset with the START/STOP button)
- 200 samples per second in all modes
- ABS enclosure (grey or black)
- graphical representation of the battery displayed on the screen
- when USB charger is connected, USB symbol displayed on the screen
- charging status LED
- low power consumption (10mA in active mode, 70uA in sleep mode)

Since the meter is never switched off (it only enters sleep mode) there is also a RESET button but I never had to use it.

Mark

Hi Mark,

I canít PM yet as Iíve not posted since joining a while back (will have to fix that), but Iíd like to put my name down for one of these if possible. Preferably in black. :-)

I presume you have a battery management/charge monitoring chip for the LIPO? Sorry if you've already gone over all this.
OK I see you have a charging status led so that probably means you have everything taken care of. ;-)

Yes, of course. I use 3.7V LiPo which is charged to 4.2V and then charging is switched off by the battery management chip. So you may leave the meter connected to the USB charger for as long as you want and nothing wrong will happen.

Originally Posted by David King

Marketing wise you might want to sell a version back to the slot car enthusiasts with a little car image instead of the guitar.

Do they need to measure magnetic field? I can put any image on the meter but the problem is that usually there is a minimum order quote (usually quite high). Do you know such guys?

It is used both for the motor magnets and the traction magnets. See links in post #80.

Thanks, the second link was the most important to clarify the issue. Very nice keyboard - I would need to have at least 50 orders to manufacture such a keyboard (which most probably won't happen). Also, I would need to change the enclosure and the magnet sensor(s). I do have all the elements needed for such a meter but this would be a lot of work.

.. Very nice keyboard - I would need to have at least 50 orders to manufacture such a keyboard (which most probably won't happen). ...

Have you considered using ebay as a "storefront" of sorts to sell your Gaussmeter?
This would still require upfront manufacturing costs, but it would make your product very available to a broad market.
Shipping cost will be based on the recipients location, but it will also be very clear what that cost will be as ebay can generate shipping costs based on your input.
You'd have the option to set up your sales as international, or not-international....
I do apologize if this has already been discussed.

I live in the US, and I would be interested in your gaussmeter. It appears shipping may be in the 70euro range, Ī$79US.
That is a sad fact of commerce.

Great looking product you have developed there!

P.S. Blaze Orange color would be nice color, I could find it on my workbench easily... Just kidding, any color would be great!

Have you considered using ebay as a "storefront" of sorts to sell your Gaussmeter?
This would still require upfront manufacturing costs, but it would make your product very available to a broad market.
Shipping cost will be based on the recipients location, but it will also be very clear what that cost will be as ebay can generate shipping costs based on your input.
You'd have the option to set up your sales as international, or not-international....
I do apologize if this has already been discussed.

I live in the US, and I would be interested in your gaussmeter. It appears shipping may be in the 70euro range, Ī$79US.
That is a sad fact of commerce.
P.S. Blaze Orange color would be nice color, I could find it on my workbench easily... Just kidding, any color would be great!

Thanks for the suggestion. It seems to me that I've seen an offer (for the delivery) for about $40 but for me it is still a lot.
For the time being I'm looking for some friends who travel to the US and can at least take the meter to the States. But this would be valid for 1, or 2 meters. I cannot ask anyone to take 10 meters with him.
One of my friends who used to live in NY can help me but he is traveling to NY in summer (in several months).

Regarding your remark on the color: I was rather thinking about changing it to grayscale colors .

I changed the name a bit of this thread, since the Spin Doctor is no longer being made.
Mark has his meter for sale, in the Flea Market, the forum area used for members having things for sale.
It can be purchased here.https://music-electronics-forum.com/...281#post528281